I think it’s coincise and clear explanation of the principle we always talk about.
I would highly suggest to take the time to look at the full video too!
Edit: it occurred to me that someone may think that the full video is by me. It’s not! I just cut the clip on a section that I thought could live and make sense on its own. The original author deserves all the praise, for the high quality, very informative video he made
I preferred the full video, but thanks for sharing. It’s a shame stroads are the norm in North America. :(